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medullose |
= pithy |
texture |
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Loose or spongy internally, denser and firmer externally. |
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flanged |
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plane shape |
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Having a relatively broad circumferential rim or ridge that protrudes laterally. |
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axile |
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placentation |
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Upon the central axis of a compound, plurilocular ovary. |
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papilla pl. papillae |
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FEATURE |
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A small, conoidal protrusion resembling a pimple. See also pustule (blister, bulla). |
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catadromous |
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venation |
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Having the first lateral vein in each pinna or primary segment of the frond arise from its midvein on the side toward the base of the frond, the pinnule or secondary segment that it leads to often disproportionately larger than the next distal ones. |
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enzymatic |
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exudation |
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Secreting a digestive exoenzyme; in carnivorous plants. |
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reticulodromous |
|
venation |
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Having a single median primary vein that branches to either side along the length of the lamina, the secondary veins running thence toward the margin, branching repeatedly, becoming less distinct, and yielding a dense higher-order reticulum near the margin. |
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vallecular |
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position |
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In or otherwise directly associated with the valleculae; esp. in fruits of Apiaceae (Umbelliferae). |
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worm-shaped |
= vermiculate |
solid shape |
|
Basically cylindric, elongate, and slender with bluntly rounded ends, variously curved over its length. |
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small-dotted |
= puncticulate |
relief |
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Finely dotted (punctate). |
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headless 1 |
= acephalous |
architecture |
|
Not terminated or surmounted by a head-like structure, esp. when one might be expected. |
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pinnatifid |
> pinnatisect; < pinnate |
plane shape |
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Pinnately divided. |
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latex pl. latices, latexes |
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SUBSTANCE |
|
A moderately viscous and sticky exudate, often milky, sometimes otherwise colored or clear. Overlaps conceptually with gum. |
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tiered |
|
arrangement |
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In two or more rows that are arrayed one above another. |
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few-… |
= oligo… |
prefix |
|
Indicating presence of or constitution by a relatively small number of entities of the type denoted by the term's stem; as in few-celled, few-flowered, few-seeded. See also many… (multi-…, pluri…, poly…). |
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articulation |
= joint |
STRUCTURE |
|
A distinct, relatively narrow zone of demarcation between adjacent main portions of an elongate structure, often thicker than the rest of the structure and sometimes a site of eventual abscission. |
|
scale 2 |
> lepis, squama, squamella, squamule; < trichome |
STRUCTURE |
|
A planate trichome. |
|
cap cell |
|
STRUCTURE |
|
The single cell, or one of the several cells, forming the uppermost (distal) portion of an antheridial wall. |
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inclinate |
= declinate |
orientation |
|
Bent or curved downward or forward. |
|
course |
|
CHARACTER |
|
Linear pattern of the centerline through the length of an axis or vein. |
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eglandular |
= glandless |
architecture |
|
Lacking glands. |
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macula pl. maculae |
= blotch, spot |
FEATURE |
|
An area that differs in color from the rest of a structure's surface, usually due to differing coloration. See also eyespot. |
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umbrella-shaped |
= umbraculiform |
solid shape |
|
Having a slender, elongate proximal axis and a very broad, meniscoid distal portion, the latter oriented with its convex face distal; like an umbrella. |
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shoot 1 |
|
STRUCTURE |
|
Collectively, all those portions of a plant body that are anatomically distinct from the root, the component axes differentiated into nodes and internodes, and branching exogenously from the former. |
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perigynium 2 pl. perigynia |
|
STRUCTURE |
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A phyllary (involucral bract) or palea (pale, palet) that fully encloses a cypsela; in Asteraceae (Compositae). |
